Measure for liquid gold.



Patented May I5, 1900.

A. M. Hausa. MEASURE FOR LIQUID GOLD.

(Application filed Nov. 2 2, 1899.)

(No Model.)

In: NORRIS PEYIRS co. PHOTO-LUNG, WISNVNGKQN, a. c

rrn STATES PATEN truce,

ALBION M. ROUSE, OF DENVER, COLORADO, ASSIGNOR OF ONE-HALF TO \VILLIAM G. SIIEDD AND FRANK BROOKS, OF SAME PLACE.

MEASURE FOR LIQUID GOLD.

SPECIFICATION forming part of Letters Patent N 0. 649,877, dated May 15, 1900. Application filed November 22,1899. $erial1l'a737l896. (No model.)

To (all whom it may concern:

Be it known that I, ALBION M. ROUSE, a citizen of the United States, residing at Denver, in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Measures for Liquid Gold, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to that class of appliances used to determine the quantity of gold in a solution, in which such work is accomplished by the use of tints and colors with which thesubstance is compared to determine the amount of gold in the solution.

The object of my invention is to construct a device of this character of such nature that the desired results may be obtained with advantage and economy.

Myinvention consists in features of novelty hereinafter fully described and claimed.

Figure I is a view,partly in vertical section, taken on line I I, Fig. II, and partly in side elevation, of my device. Fig. II is a view in front elevation of the device, the box or case being shown in vertical section. a detail vertical sectional view taken on the line III III, I.

1 designates the box or case, havinginclined sides 2 and in which the measuring device may be placed when not in use and which serves as a support for the measure when in use. The box is adapted to receive the cover shown by dotted lines, Fig. I.

3 designates a frame surrounded bya flan geband 4:, having side walls 5 and a base 6, that receives a clamping-finger 7, pivoted to the box 1, to serve as a holder by which the frame is maintained in upright position when in use.

8 designates an opaque casing secured to the frame 3 and having its upper and lower ends open. Fitting in the opaque casing 8 is a transparent tube 9, such as glass, having a closed lower end 10, that is designed to be positioned at the lower open end of the easing. The tube 9 is formed with a bulb 11 at its upper end. Within the tube 9 is a telescoping transparent tube 12, having an open upper end 12 and a closed lower end 13. The

Fig. III is diameter of the tube 12 is considerably less than that of the tube 9, so that an annular space 14: is produced between the two tubes. The bulb 11, formed upon the tube 9, is provided with an opening that is closed by an apertured pliable stopper 15, that fits snugly to the telescoping tube 12.

16 designates a scale at which is located an indicator-rod 17, mounted in eyes 19, the rod being provided with a pointer 18 and a handle 18. When not in use, the indicator-rod lies flat against the frame 3 and its handle is held beneath a stud 20, projecting from the frame 3.

21 designates a sight-tube mounted on the frame 3 at one side of the casing 8. Also mounted on the frame 3 is a housing 22, provided with an opening 23 in its face and having at its uppermost part the slot 24. The housing 22 contains a revoluble disk 25, pivotally mounted on the screw or pin 20 and provided with studs 27,projeeting through the opening 23, whereby the disk may be turned. The circumferential face of the disk 25 is provided with a series of flat fields 28, that are designed to contain separate colors, each of said fields being adapted to be brought to the slot 24 in the disk-housing beneath the sight-tube 21. On the face of the disk 25, opposite the fields 28, are a series of chart-designations A, by which the various colors are distinguished.

29 designates a white field located directly beneath the lower end of the casing 8 and likewise beneath the lower end of the transparent tubes 9 and 12.

In the practical use of this measure the liquid-gold solution is inserted into the bulb 11 of the tube 9, the tube being preferably filled until the solution reaches a level near the top of the bulb. The stopper 15 is then inserted in the bulb by sliding it over the telescoping tube, and the telescoping tube may be ele* vated at will within the tube 9 and may be maintained in any position to which it is moved by the frictional contact between it and the pliable stopper 15. The solution flows downwardly to the lower closed end of the tube 9, where it surrounds the telescoping tube 12. The telescoping tube 12 being raised from contact with the lower closed end of the tube 9, the solution is permitted to flow be out their length. On looking through. the telescoping tube, as explained, and raising ,said tube the person making the examination is enabled to observe the. color of the gold solution contained by the tube 9 at different heights of the liquid beneath the telescoping tube. At the same time the other eye is held in a position above the sight-tube 21, and thereby an observation-is obtained of the colordisk which is turned to bring into View one of the fields 28 that will correspond to the color ofthe gold solution being examined.

With this measure I employ a chart or key bearing indications of gold values which may be determined on comparing the designations A on the color-disk 25. This chart, however, forms no part of the invention describedin this application. When the color ofthe gold solution has been matched with a color upon the disk 25 by adjusting the telescoping tube, the handle 18 of the indicatorrod is turned from the position seen in full lines, Fig. II, to that seen in dotted lines, where it is brought to rest on the upper end ofthe telescoping tube 12, in which action the pointer 18 of'the indicator-rod has been moved'along the scale 16. The colordesignation A on the colordisk found to corre-- spond to the color of the gold solution is found on the chart by the person making the examination and from that color-designation is traced the numeral indicated on the scale 16, from which number tracing is accomplished to the dollar-line, at which is found a designation of the value of-the gold in the solution under treatment.

The tints on the color-disk are determined by the use of standard gold solutions in the tube 9. I use the word standard in this case as having reference to the tint in the gold "solution, all of which I determine by the use of other liquid metals.

The chart referred to can be formulated to suit the work in hand. The only relation that exists between the combination of parts and the chart is the letters on the color-disk and figures on the scale. The letter indicates the proper line of numbers, and above the number wanted will be found the value in two thousand pounds of solution.

Any prospector can be taught to use the device very readily.

I claim as my invention- 1. In a measure of the class described, the combination of a frame, an opaque casing mounted thereon, a pair of transparent telescoping tubes having closed lower ends, and located within said casing, a sight-tube mounted on said frame, a color-disk movably mounted on said frame, a scale, and an in-- dicator-rod adapted to be moved with relation to said scale, substantially as and for the purpose set forth.

2. A measure of the class described comprising a frame, an opaque casing mounted 

